SUMMIT TWP, MI -- A Jackson County Sheriff's investigation into a shooting might be related to a Calhoun County case, Sheriff Steve Rand said.

Rand had little information, but said there was a home invasion or robbery reported Thursday morning on J Drive South near 30 Mile Road, just past the Jackson County line.

At about 10:30 a.m., Jackson County Sheriff's deputies were called to 5411 Sharon Drive, where they found a gunshot victim.

The man had been shot in his side, Rand said. His injury was serious, Rand said.

Another person found at the home, on a quiet street between Floyd Avenue and Marion Road near Vandercook Lake, was placed in handcuffs and taken away in a sheriff's patrol vehicle. Rand called the man a "person of interest."

The sheriff said police do not think any suspects or individuals linked to the crime are in the Vandercook Lake area. No one in the neighborhood is believed to be in danger, he said.

As a precaution, the high school had been locked down, Rand said, and school officials said Vandercook Lake's Townsend Elementary also was locked down. The lockdown has been lifted.

Detectives remain at the house. Yellow police tape is blocking the driveway.